magento block controller layout

冷不防 2022-05-16 07:05 206阅读 0赞

1.  
./code/community/Zendesk/Zendesk/Block/Adminhtml/Dashboard/Grids.php

$this->getLayout()->createBlock('zendesk/adminhtml\_dashboard\_tab\_tickets\_grid\_all')->toHtml();

./code/community/Zendesk/Zendesk/Block/Adminhtml/Create/Order.php:40:

return $this->getLayout()->createBlock('adminhtml/widget\_button')->setData($addButtonData)->toHtml();

./code/community/Zendesk/Zendesk/Block/Adminhtml/Create/Order.php:40:

return $this->getLayout()->createBlock('adminhtml/widget\_button')->setData($addButtonData)->toHtml();

class Aschroder\_SMTPPro\_Block\_Adminhtml\_Test  
    extends Mage\_Adminhtml\_Block\_System\_Config\_Form\_Field  
\{

protected function \_getElementHtml(Varien\_Data\_Form\_Element\_Abstract $element)  
    \{  
        $this->setElement($element);  
        $buttonHtml = $this->\_getAddRowButtonHtml($this->\_\_('Run Self Test'));  
        return $buttonHtml;  
    \}

protected function \_getAddRowButtonHtml($title)  
  \{

$buttonBlock = $this->getElement()->getForm()->getParent()->getLayout()->createBlock('adminhtml/widget\_button');

$\_websiteCode = $buttonBlock->getRequest()->getParam('website', null);

$params = array();

if(!empty($\_websiteCode)) \{  
            $params\['website'\] = $\_websiteCode;  
        \}

// TODO: for real multi-store self-testing, the test button (and other configuration options)  
        // should probably be set to show in website. Currently they are not.  
        $url = Mage::helper('adminhtml')->getUrl("\*/smtp\_test/index", $params);

$buttonHtml = $this->getLayout()->createBlock('adminhtml/widget\_button')  
                    ->setType('button')  
                    ->setLabel($this->\_\_($title))  
                    ->setOnClick("window.location.href='".$url."'")  
                    ->toHtml();

return $buttonHtml;  
    \}

直接创建一个block，然后加入到配置中

\`\`\`  
public function indexAction()  
\{  
//Get current layout state  
$this->loadLayout();  
   
$block = $this->getLayout()->createBlock(  
'Mage\_Core\_Block\_Template',  
'my\_block\_name\_here',  
array('template' => 'activecodeline/developer.phtml')  
);

// 从layout中得到一个已有的block，然后将上面创建的加入的写法。  
$this->getLayout()->getBlock('content')->append($block);  
   
//Release layout stream... lol... sounds fancy  
$this->renderLayout();  
\}

\`\`\`

\`\`\`  
    public function indexAction()\{  
        $this->loadLayout();  
        $this->\_initLayoutMessages('customer/session');  
        $this->renderLayout();  
    \}  
\`\`\`

2.代码剖析

上面是在controller和block可以被执行中执行的

2.1 $this->getLayout()  
2.1.1 block： Mage\_Core\_Block\_Abstract

/\*\*  
     \* Retrieve layout object  
     \*  
     \* @return Mage\_Core\_Model\_Layout  
     \*/  
    public function getLayout()  
    \{  
        return $this->\_layout;  
    \}

返回的是：Mage\_Core\_Model\_Layout

2.1.2 controller: Mage\_Core\_Controller\_Varien\_Action

/\*\*  
     \* Retrieve current layout object  
     \*  
     \* @return Mage\_Core\_Model\_Layout  
     \*/  
    public function getLayout()  
    \{  
        return Mage::getSingleton('core/layout');  
    \}

本质就是：单例模式的core/layout  model:  
Mage::getSingleton('core/layout');

2.2 loadLayout